One of the safest and most reliable stability ball on the market
Made of a heavier, thicker-gauge material than other balls
More resistant to stretching or deforming
Dimpled surface offers a 360-degree body-traction effect
SPRI Ultra Ball's superior performance and maximum durability help make it the safest and most reliable stability ball on the market today. It's made of a heavier, thicker-gauge material than other balls, so it's more resistant to stretching or deforming and ideal for use in the most demanding club environments. The dimpled surface offers a 360-degree body-traction effect. Slow deflate up to 600 lbs.
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